At the same time, the probability of blockage of branch pipes such as floor drains and wash basins is very small. The addition of a water storage elbow has little effect, and it has an additional layer of protection. The toilet pipe is easily blocked. In the current drainage design, toilet drainage is used in many places as an independent drainage riser, which is distinguished from other branch pipes. The branch pipe takes another riser, so many bathrooms are designed with three pipes, one of which is used for ventilation. There are two types of toilet squatting toilets, one is with a trap, and the other is without a trap. The squatting toilet with a water trap has a built-in S-shaped water trap. It is no longer necessary to add a water trap when installing the drainage pipe. Very difficult. For squatting toilets without a water trap, a water trap needs to be added when the drain pipe is installed. For squatting bedpans with water traps, the distance between the drain outlet and the wall is 60-65 cm, and for squatting pots without water traps, the distance between the drain outlet and the wall is 30-35 cm. If the toilet is installed with a toilet, the specific reserved size of the squatting toilet should be obtained before installation.
